The Rydis Robot Vacuum Cleaner, with a relatively low 3.23-inch profile, can work its way under low-lying chairs, tables and other furniture. / Gannett

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Funny thing about robots: They tend to reproduce and evolve. Consider the deservedly popular Roomba line of robotic vacuum cleaners, those nifty devices that look like flying saucers and navigate across your floors and carpets to keep them clean. Another manufacturer - Moneual - has designed a worthy competitor, the Rydis Robot Vacuum Cleaner.

With a relatively low 3.23-inch profile, the Rydis can work its way under low-lying chairs, tables and other furniture. Better yet, when set on shadow mode, it will focus on cleaning a specific "shadow" area, such as under a bed or table. Plus, its ...